import os.path
import xml.etree.ElementTree as ET

class_names = ['brolly','person','ma']

xmlpath = "D:\\Dhkit\\Mix\\VSCODE\\python\\Yolov5\\datasets\\coco128\\labels\\nn\\" # xml文件的位置
txtpath = "D:\\Dhkit\\Mix\\VSCODE\\python\\Yolov5\\datasets\\coco128\\labels\\nd\\" # 导出txt的位置

files=[]

for root, dirs, files in os.walk(xmlpath):
    # print(root,dirs,files)
    None

number = len(files)
i = 0
while i < number:

    name = files[i][0:-4]
    xml_name = name + ".xml"
    txt_name = name + ".txt"
    xml_file_name = xmlpath + xml_name
    txt_file_name = txtpath + txt_name

    xml_file = open(xml_file_name)
    tree = ET.parse(xml_file)
    root = tree.getroot()
    filename = root.find('filename').text

    image_name = root.find('filename').text
    w = int(root.find('size').find('width').text)
    h = int(root.find('size').find('height').text)

    f_txt = open(txt_file_name, 'w+')
    content = ""

    first = True

    for obj in root.iter('object'):

        name = obj.find('name').text
        print(name)
        class_num = class_names.index(name)

        xmlbox = obj.find('bndbox')

        x1 = int(xmlbox.find('xmin').text)
        x2 = int(xmlbox.find('xmax').text)
        y1 = int(xmlbox.find('ymin').text)
        y2 = int(xmlbox.find('ymax').text)

        if first:
            content += str(class_num) + " " + \
                       str((x1+x2)/2/w) + " " + str((y1+y2)/2/h) + " " + \
                       str((x2-x1)/w) + " " + str((y2-y1)/h)
            first=False
        else:
            content += "\n" + \
                       str(class_num) + " " + \
                       str((x1 + x2) / 2 / w) + " " + str((y1 + y2) / 2 / h) + " " + \
                       str((x2 - x1) / w) + " " + str((y2 - y1) / h)

    print(str(i/(number - 1) * 100) + "%\n")
    f_txt.write(content)
    f_txt.close()
    xml_file.close()
    i += 1

print("done!")
